NimExec

NimExec 기본적으로 NimExec는 SCMRService Control Manager Remote Protocol을 사용하는 파일리스 원격 명령 실행 도구입니다. LocalSystem이 실행하는 무작위 또는 지정된 서비스의 바이너리 경로를 변경하여 대상에서 주어진 명령을 실행한 후, WinAPI 호출 대신 수제작된 RPC 패킷을 통해 나중에 복원합니다. 이러한 패킷은 SMB2와 svcctl 명명된 파이프를 통해 전송됩니다. NimExec는 대상 머신에 인증하기 위해 NTLM 해시가 필요하며, 수제작된 패킷을 통해 NTLM...

Titanis

はじめに Titanis は、Windows 環境と対話するための、C で書かれたプロトコル実装とコマンドラインユーティリティのライブラリです。 .NET 8 を使用し、クロスプラットフォーム Windows および Linux に対応しています。 実装されているプロトコルの一部: SMB2 MS-SMB2 SMB 2.x および 3.x 3.1.1 まで 署名や暗号化などのメッセージセキュリティ機能 ファイルシステム制御コード MS-FSCC のサポートを含みます DFS リンク MS-DFSC MSRPC MS-RPCE エンドポイントマッパー DCOM MS-DCOM EFS...

CVE-2026-72422

A flaw was found in ksmbd, the in-kernel SMB3 server for Linux. A remote attacker could exploit a use-after-free vulnerability by sending specially crafted concurrent SMB2 NEGOTIATE requests on the same connection. This could lead to memory corruption, potentially allowing the attacker to execute...

CVE-2026-72381

A flaw was found in ksmbd, the in-kernel SMB3 server for Linux. A remote attacker can exploit a race condition by initiating two concurrent SMB2 durable reconnects with the same persistent ID. This can lead to a use-after-free error, where freed memory is accessed, potentially causing system...

Linux Distros Unpatched Vulnerability : CVE-2026-72381

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: fix use-after-free of fp-owner.name in durable handle owner check Two concurrent SMB2 durable reconnects DH2C/DHnC on the same persistentid race the...

Linux Distros Unpatched Vulnerability : CVE-2026-72422

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: fix use-after-free of conn-preauthinfo in concurrent SMB2 NEGOTIATE conn-preauthinfo is shared connection state struct preauthintegrityinfo, kmalloc-96...

CVE-2026-74494

A flaw was found in ksmbd, a kernel module for SMB3 protocol support. An unauthenticated client can send multiple SMB2 NEGOTIATE requests on a single connection before a session is established. This leads to a memory leak, as previous allocations are not properly freed. Repeated exploitation of...

SUSE CVE-2026-74494

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

UBUNTU-CVE-2026-74494

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494 ksmbd: reject repeated SMB2 NEGOTIATE requests

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494 ksmbd: reject repeated SMB2 NEGOTIATE requests

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494

CVE-2026-74494 relates to ksmbd in the Linux kernel. Unauthenticated clients can issue multiple SMB2 NEGOTIATE requests on a single connection before SESSION_SETUP; during KSMBD_SESS_NEED_SETUP, smb2_handle_negotiate() may accept another SMB3.1.1 NEGOTIATE and overwrite conn->preauth_info, cau...

EUVD-2026-59687

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-72422

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of conn-preauthinfo in concurrent SMB2 NEGOTIATE conn-preauthinfo is shared connection state struct preauthintegrityinfo, kmalloc-96 that is allocated and freed by the SMB2 NEGOTIATE handler and read by...

CVE-2026-72381

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of fp-owner.name in durable handle owner check Two concurrent SMB2 durable reconnects DH2C/DHnC on the same persistentid race the fp-owner.name compare-read in ksmbdvfscomparedurableowner against the kfr...

CVE-2026-72310

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix overflow in passthrough ioctl bounds check smb2ioctlqueryinfo validates the PASSTHRUFSCTL response payload before copying it to userspace. The payload offset and length both come from 32-bit fields. The bounds...